Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. An apparatus for a user equipment (UE), the apparatus comprising: one or more processors, wherein the one or more processors are configured to: use a forward error correction code (FEC) to jointly encode all reported components of one or more channel state information (CSI) payloads that each represent a CSI report into a single codeword for transmission over a physical uplink control channel (PUCCH); wherein the reported CSI payload components that are jointly encoded include one or more of: a CSI reference signal (CSI-RS) resource indicator (CRI), a rank indicator (RI), a layer indicator (LI), a precoding matrix indicator (PMI), or a channel quality indicator (CQI); and, add a number of padding bits as necessary to the CSI payload before encoding to make the bitwidth of the CSI payload equal to a predetermined maximum allowable CSI payload bitwidth wherein the components of the CSI payload are ordered as follows: CR1, RI, LI, padding bits, PMI, and CQI.
This invention relates to wireless communication systems, specifically improving the efficiency and reliability of channel state information (CSI) reporting from user equipment (UE) to a base station. The problem addressed is the overhead and complexity of transmitting multiple CSI components (such as CRI, RI, LI, PMI, and CQI) separately, which can lead to inefficiencies in uplink control channel (PUCCH) transmission. The apparatus includes one or more processors configured to jointly encode all reported CSI components into a single codeword using forward error correction (FEC) for transmission over the PUCCH. This joint encoding reduces overhead by combining multiple CSI components into a single encoded payload. The CSI components that may be included are a CSI-RS resource indicator (CRI), rank indicator (RI), layer indicator (LI), precoding matrix indicator (PMI), and channel quality indicator (CQI). Padding bits are added to the CSI payload to ensure its bitwidth matches a predetermined maximum allowable size before encoding. The CSI components are ordered in a specific sequence: CRI, RI, LI, padding bits, PMI, and CQI. This structured approach ensures efficient encoding and transmission while maintaining reliability through FEC. The invention optimizes uplink control signaling by reducing redundancy and improving error resilience in CSI reporting.
2. The apparatus of claim 1 , wherein the number of padding bits A padding is calculated as: A padding =A max CSI −A CSI where A CSI is the bitwidth of the reported components of the CSI payload and A max CSI is the maximum allowable CSI payload bitwidth.
This invention relates to wireless communication systems, specifically to apparatuses for handling Channel State Information (CSI) payloads in communication devices. The problem addressed is efficiently managing the bitwidth of CSI payloads to ensure compatibility with system constraints while minimizing overhead. The apparatus includes a processor configured to calculate the number of padding bits required for a CSI payload. The calculation is performed by determining the difference between a predefined maximum allowable CSI payload bitwidth and the actual bitwidth of the reported CSI components. The padding bits are then added to the CSI payload to ensure it meets the maximum bitwidth requirement, preventing transmission errors or inefficiencies due to mismatched payload sizes. The apparatus may also include a transmitter for sending the padded CSI payload to a receiving device, ensuring proper alignment with system protocols. The padding mechanism ensures that the CSI payload adheres to the maximum bitwidth constraints, optimizing communication efficiency and reliability. This approach is particularly useful in systems where CSI payloads must conform to strict bitwidth limits, such as in 5G or other advanced wireless networks. The invention improves data transmission by dynamically adjusting padding to maintain payload integrity while minimizing unnecessary overhead.
3. The apparatus of claim 2 , wherein the bitwidth of the reported components of the CSI payload A CSI is a function of the reported RI and wherein the maximum allowable CSI payload bitwidth A max CSI is a function of a set of allowed RI values.
This invention relates to wireless communication systems, specifically to apparatuses for reporting channel state information (CSI) in a manner that optimizes payload size and efficiency. The problem addressed is the need to balance detailed channel feedback with limited bandwidth resources, particularly in systems where the rank indicator (RI) affects the amount of data required for accurate channel representation. The apparatus includes a transmitter configured to send a CSI payload containing components such as channel quality indicators (CQI), precoding matrix indicators (PMI), and RI. The bitwidth of these reported components is dynamically adjusted based on the RI value, ensuring that higher RI values, which require more data, are accommodated without exceeding a predefined maximum payload bitwidth. This maximum bitwidth is determined by a set of allowed RI values, ensuring compatibility with system constraints while maintaining feedback accuracy. The apparatus also includes a receiver to process the CSI payload and a controller to manage the bitwidth allocation. By linking the bitwidth of CSI components to the RI, the system efficiently adapts to varying channel conditions, reducing unnecessary overhead while preserving critical feedback information. This approach is particularly useful in multi-antenna systems where RI variations significantly impact the required CSI payload size.
4. The apparatus of claim 1 , wherein the predetermined maximum allowable CSI payload bitwidth is determined by parameters to be received from a next generation Node B (gnB).
A wireless communication system includes a user equipment (UE) device configured to receive control information from a next-generation Node B (gNB) in a cellular network. The UE includes a processor and a memory storing instructions that, when executed, cause the processor to determine a maximum allowable Channel State Information (CSI) payload bitwidth based on parameters received from the gNB. The CSI payload bitwidth defines the maximum number of bits that can be transmitted in a CSI report, which is used to provide feedback on channel conditions to the gNB for optimizing downlink transmissions. The parameters from the gNB may include configuration settings, network conditions, or quality of service requirements that influence the allowable bitwidth. The UE dynamically adjusts the CSI payload size to ensure efficient use of uplink resources while maintaining accurate channel feedback. This approach prevents excessive overhead in the uplink while adapting to varying network demands and conditions. The system ensures reliable communication by balancing CSI reporting granularity with resource efficiency.
5. The apparatus of claim 4 , wherein the parameters that determine the maximum allowable CSI payload bitwidth include a set of allowed RI values as indicated by higher layer parameter ri _ restriction.
This invention relates to wireless communication systems, specifically to apparatuses for managing Channel State Information (CSI) reporting in wireless networks. The problem addressed is the need to efficiently control the bitwidth of CSI payloads to optimize resource usage while maintaining communication quality. The apparatus includes a processor configured to determine a maximum allowable CSI payload bitwidth based on predefined parameters, including a set of allowed Rank Indicator (RI) values specified by a higher layer parameter called "ri_restriction." The RI values indicate the number of spatial layers used in communication, and restricting these values helps manage the complexity and overhead of CSI reporting. The apparatus also includes a transmitter for sending the determined bitwidth to a user equipment (UE) to ensure the UE adjusts its CSI reporting accordingly. This mechanism prevents excessive bitwidth usage, which can lead to inefficient resource allocation and degraded performance. By dynamically adjusting the allowed RI values, the system balances between accurate channel feedback and resource efficiency, improving overall network performance. The invention is particularly useful in scenarios where bandwidth is limited or where minimizing signaling overhead is critical.
6. The apparatus of claim 4 , wherein the parameters that determine the maximum allowable CSI payload bitwidth include a CSI-RS resource set to be used for CSI reporting and the number of resources in the CSI-RS resource set.
This invention relates to wireless communication systems, specifically to apparatuses for determining the maximum allowable Channel State Information (CSI) payload bitwidth in a wireless network. The problem addressed is the need to efficiently manage CSI reporting in wireless systems, particularly in scenarios where multiple CSI-Reference Signal (CSI-RS) resources are used. The apparatus includes a processor configured to determine the maximum allowable CSI payload bitwidth based on predefined parameters, including the CSI-RS resource set to be used for CSI reporting and the number of resources within that set. The apparatus may also include a transmitter configured to transmit the determined maximum allowable CSI payload bitwidth to a user equipment (UE) or another network component. The invention ensures that CSI reporting is optimized by dynamically adjusting the payload bitwidth based on the available CSI-RS resources, improving communication efficiency and reducing overhead. The apparatus may further include a receiver to obtain CSI feedback from the UE, which is then processed to enhance channel estimation and data transmission reliability. The solution is particularly relevant in advanced wireless systems where multiple CSI-RS resources are utilized to support high data rates and reliable communication.
7. The apparatus of claim 4 , wherein the parameters that determine the maximum allowable CSI payload bitwidth include the number of CSI-RS ports.
This invention relates to wireless communication systems, specifically optimizing the payload size of Channel State Information (CSI) reports to improve efficiency in feedback transmission. The problem addressed is the need to balance the accuracy of CSI feedback with the overhead it introduces in the system, particularly in scenarios with multiple antenna ports. The apparatus includes a processor configured to determine a maximum allowable bitwidth for CSI payloads based on configurable parameters. These parameters include the number of Channel State Information Reference Signal (CSI-RS) ports, which are used to estimate the wireless channel. The bitwidth is adjusted to ensure that the CSI payload remains within a manageable size while still providing sufficient channel information for efficient data transmission. The system dynamically adjusts the CSI payload size by evaluating the number of CSI-RS ports and other factors, such as channel conditions or system requirements. This allows the apparatus to optimize the trade-off between feedback accuracy and transmission overhead, improving overall system performance. The apparatus may also include a transmitter to send the CSI feedback to a base station or other receiving device, ensuring that the feedback is both timely and efficient. By dynamically controlling the CSI payload bitwidth, the invention reduces unnecessary overhead in the uplink channel, particularly in systems with a large number of antenna ports, while maintaining the necessary accuracy for reliable communication. This approach is particularly useful in advanced wireless systems like 5G and beyond, where multiple-input multiple-output (MIMO) configurations are common.
8. The apparatus of claim 1 , wherein the maximum allowable CSI payload bitwidth includes a maximum allowable PMI bitwidth that is a function of parameters to be received from a next generation Node B (gNB) that include the number of CSI- RS ports divided over two dimensions designated N 1 and N 2 and corresponding oversampling factors divided over two dimensions for codebook vectors referenced by the PMI designated as O 1 and O 2.
This invention relates to wireless communication systems, specifically to the configuration of Channel State Information (CSI) reporting in next-generation cellular networks (5G NR and beyond). The problem addressed is optimizing the bitwidth of CSI payloads, particularly the Precoding Matrix Indicator (PMI) bitwidth, to balance reporting accuracy and overhead in multi-dimensional antenna configurations. The apparatus includes a user equipment (UE) configured to determine a maximum allowable CSI payload bitwidth, which includes a maximum allowable PMI bitwidth. The PMI bitwidth is dynamically adjusted based on parameters received from a base station (gNB), including the number of Channel State Information Reference Signal (CSI-RS) ports distributed across two dimensions (N1 and N2) and corresponding oversampling factors (O1 and O2) for codebook vectors referenced by the PMI. This allows the UE to adapt its CSI reporting to the gNB's antenna configuration, ensuring efficient use of uplink resources while maintaining sufficient channel state accuracy for beamforming and precoding. The solution enables flexible CSI reporting in advanced multi-dimensional antenna deployments, such as massive MIMO systems.
9. The apparatus of claim 1 , wherein the maximum allowable CSI payload bitwidth A max CSI is calculated as: A max CSI =max(A PMI (r)+A CQI (r)+A LI (r)) where max(A PMI (r)+A CQI (r)+A LI (r)) is the maximum of the sum of the PMI bitwidth A PMI (r), the CQI bitwidth A CQI (r), and the LI bitwidth A LI (r) over a set of rank values allowed to be reported.
In wireless communication systems, efficient feedback of channel state information (CSI) is critical for optimizing data transmission. The invention addresses the challenge of determining the maximum allowable CSI payload bitwidth to ensure reliable and efficient communication. The apparatus calculates the maximum allowable CSI payload bitwidth (A_max_CSI) by evaluating the sum of three key parameters: the PMI (Precoding Matrix Indicator) bitwidth (A_PMI(r)), the CQI (Channel Quality Indicator) bitwidth (A_CQI(r)), and the LI (Layer Indicator) bitwidth (A_LI(r)) across all possible rank values (r) that can be reported. The calculation involves finding the maximum sum of these bitwidths over the allowed rank values. This ensures that the CSI payload remains within feasible transmission limits while maintaining accuracy. The apparatus dynamically adjusts the bitwidth allocation based on the rank values, optimizing the balance between feedback overhead and channel state accuracy. This approach enhances system performance by reducing unnecessary data transmission while ensuring critical channel information is accurately conveyed. The invention is particularly useful in advanced wireless systems where efficient CSI feedback is essential for adaptive modulation and beamforming.
10. The apparatus of claim 1 , wherein the FEC code is a polar code.
A system for error correction in data transmission uses forward error correction (FEC) to improve reliability. The system includes a transmitter that encodes data using an FEC code before transmission and a receiver that decodes the received data using the same FEC code. The FEC code is specifically a polar code, which is a type of error-correcting code known for its capacity-achieving properties and efficient encoding/decoding algorithms. Polar codes are constructed by combining multiple binary-input discrete memoryless channels in a recursive manner, allowing them to approach the theoretical limits of channel capacity. The transmitter may include an encoder that applies the polar code to the data, while the receiver includes a decoder that reconstructs the original data by correcting errors introduced during transmission. The system may operate in various communication environments, such as wireless networks, fiber-optic links, or storage systems, where data integrity is critical. The use of polar codes provides robust error correction with low computational complexity, making it suitable for high-speed and resource-constrained applications. The system may also include additional components, such as modulators, demodulators, and channel estimators, to support the overall communication process. The polar code implementation may involve techniques like successive cancellation decoding or belief propagation to enhance decoding performance.
11. The apparatus of claim 1 , wherein multiple CSI payloads representing multiple CSI reports are ordered sequentially to form a single encoder input bit sequence for encoding into the single codeword.
This invention relates to wireless communication systems, specifically to techniques for handling channel state information (CSI) reports in uplink transmissions. The problem addressed is the efficient transmission of multiple CSI reports from a user equipment (UE) to a base station, particularly in scenarios where bandwidth or latency constraints limit the ability to transmit each report individually. The solution involves aggregating multiple CSI payloads into a single encoder input bit sequence, which is then encoded into a single codeword for transmission. This approach reduces overhead and improves transmission efficiency by leveraging a single encoding process for multiple reports. The apparatus includes a processor configured to order the CSI payloads sequentially, ensuring proper reconstruction at the receiver. The encoding process may involve error correction techniques to maintain data integrity. This method is particularly useful in high-mobility or high-data-rate environments where timely and accurate channel feedback is critical for adaptive modulation and coding schemes. The invention optimizes resource utilization by minimizing the number of transmissions while preserving the integrity and timeliness of the CSI data.
12. A user equipment (UE), the UE comprising: one or more memory mediums; and one or more processors coupled to the one or more memory mediums, wherein the one or more processors are configured to cause the UE to: use a forward error correction code (FEC) to jointly encode all reported components of one or more channel state information (CSI) payloads that each represent a CSI report into a single codeword for transmission over a physical uplink control channel (PUCCH), wherein the one or more memory mediums are configured to store the one or more CSI payloads; wherein the reported CSI payload components that are jointly encoded include one or more of: a CSI reference signal (CSI-RS) resource indicator (CRI), a rank indicator (RI), a layer indicator (LI), a precoding matrix indicator (PMI), and a channel quality indicator (CQI); add a number of padding bits as necessary to the CSI payload before encoding to make the bitwidth of the CSI payload equal to a maximum allowable CSI payload bitwidth, wherein the number of padding bits A padding is calculated as: A padding =A max CSI −A CSI where A CSI is the bitwidth of the reported components of the CSI payload and A max CSI is the maximum allowable CSI payload bitwidth; and, wherein the bitwidth of the reported components of the CSI payload A CSI is a function of the reported RI and wherein the maximum allowable CSI payload bitwidth A max CSI is a function of a set of allowed RI values to be received from a next generation Node B (gNB).
This invention relates to wireless communication systems, specifically improving the efficiency of channel state information (CSI) reporting in user equipment (UE). The problem addressed is the need to optimize the transmission of CSI reports over the physical uplink control channel (PUCCH) while ensuring reliable decoding at the base station (gNB). The UE includes memory and processors configured to encode CSI payloads using a forward error correction (FEC) code. All reported components of one or more CSI payloads, such as CSI reference signal (CSI-RS) resource indicator (CRI), rank indicator (RI), layer indicator (LI), precoding matrix indicator (PMI), and channel quality indicator (CQI), are jointly encoded into a single codeword for transmission. Before encoding, padding bits are added to the CSI payload to match a predefined maximum allowable bitwidth. The padding calculation ensures the payload fits within the allowed bitwidth, where the required padding is determined by subtracting the actual CSI payload bitwidth from the maximum allowable bitwidth. The actual bitwidth of the CSI payload depends on the reported RI, while the maximum allowable bitwidth is based on a set of allowed RI values configured by the gNB. This approach reduces overhead and improves transmission reliability by efficiently encoding multiple CSI components into a single codeword.
13. The UE of claim 12 , wherein the maximum allowable CSI payload bitwidth A max CSI is further a function of parameters to be received from a next generation Node B (gNB) that include a CSI-RS resource set to be used for CSI reporting and the number of resources in the CSI-RS resource set.
This invention relates to wireless communication systems, specifically to methods for determining the maximum allowable Channel State Information (CSI) payload bitwidth in a user equipment (UE) device. The problem addressed is the need to efficiently manage CSI reporting in next-generation wireless networks, such as 5G, where the payload size must be dynamically adjusted based on network conditions and resource configurations to optimize performance and reduce overhead. The UE device includes a processor configured to calculate a maximum allowable CSI payload bitwidth (A_max_CSI) based on multiple parameters. These parameters include the CSI-Reference Signal (CSI-RS) resource set to be used for CSI reporting and the number of resources within that set. The CSI-RS resource set defines the specific reference signals the UE will measure to generate CSI feedback, while the number of resources determines the granularity and complexity of the measurements. By incorporating these parameters into the calculation, the UE can dynamically adjust the payload size to match the available resources, ensuring efficient use of uplink bandwidth and reducing unnecessary signaling overhead. The invention also involves receiving configuration information from a next-generation Node B (gNB), which specifies the CSI-RS resource set and the number of resources. This allows the UE to adapt its CSI reporting strategy in real-time, improving overall network efficiency and reliability. The solution ensures that the CSI payload remains within feasible limits while maintaining accurate channel state feedback for optimal data transmission.
14. The UE of claim 12 , wherein the maximum allowable CSI payload bitwidth A max CSI is further a function of parameters to be received from a next generation Node B (gNB) that include the number of CSI-RS ports.
This invention relates to wireless communication systems, specifically to techniques for determining the maximum allowable Channel State Information (CSI) payload bitwidth in a user equipment (UE) device. The problem addressed is efficiently managing CSI reporting to balance accuracy and overhead in next-generation networks, particularly when the number of Channel State Information Reference Signal (CSI-RS) ports varies. The UE includes circuitry configured to determine a maximum allowable CSI payload bitwidth (A_max_CSI) based on multiple factors. These include the number of CSI-RS ports, which are transmitted by a next-generation Node B (gNB). The CSI-RS ports represent the antenna ports used for channel estimation, and their count directly impacts the complexity and size of the CSI feedback. By dynamically adjusting the bitwidth as a function of the CSI-RS port count, the UE optimizes the trade-off between feedback granularity and signaling overhead. This ensures efficient resource utilization while maintaining reliable channel state reporting for advanced features like beamforming and multi-user MIMO. The solution involves a UE that receives CSI-RS port configuration from the gNB and computes A_max_CSI accordingly. This allows the UE to adapt its CSI reporting mechanism based on network conditions and configuration, improving overall system performance. The invention is particularly relevant in 5G and beyond networks where flexible and scalable CSI reporting is critical for supporting diverse use cases and deployment scenarios.
15. The UE of claim 12 , wherein the padding bits are zeroes.
A system and method for wireless communication involves a user equipment (UE) device that transmits data packets with padding bits to meet a minimum packet size requirement. The UE generates a data packet containing user data and appends padding bits to the packet to ensure it meets a specified minimum size. The padding bits are set to zero values to simplify processing and reduce computational overhead. The UE then transmits the padded packet to a base station or another network node. This approach ensures efficient use of network resources by preventing the transmission of excessively small packets while minimizing the complexity of padding bit generation and handling. The system is particularly useful in wireless communication networks where packet size constraints are imposed to optimize bandwidth utilization and maintain network efficiency. The use of zero-valued padding bits allows for straightforward implementation in hardware and software, reducing the need for additional processing steps. This method is applicable in various wireless communication standards, including 5G and beyond, where efficient data transmission is critical for supporting high-speed and low-latency applications.
16. A non-transitory computer-readable storage medium comprising instructions to cause a user equipment (UE), upon execution of the instructions by one or more processors, to: use a forward error correction code (FEC) to jointly encode all reported components of one or more channel state information (CSI) payloads that each represent a CSI report into a single codeword for transmission over a physical uplink control channel (PUCCH); wherein the reported CSI payload components that are jointly encoded include: a CSI reference signal (CSI-RS) resource indicator (CRI), a rank indicator (RI), a layer indicator (LI), a precoding matrix indicator (PMI), and a channel quality indicator (CQI); and, add a number of padding bits as necessary to the CSI payload before encoding to make the bitwidth of the CSI payload equal to a predetermined maximum allowable CSI payload bitwidth wherein the components of the CSI payload are ordered as follows: CRI, RI, LI, padding bits, PMI, and CQI.
This invention relates to wireless communication systems, specifically improving the efficiency of channel state information (CSI) reporting in uplink control channels. The problem addressed is the overhead and inefficiency in transmitting multiple CSI components separately, which can lead to increased latency and reduced spectral efficiency. The solution involves jointly encoding all CSI components of one or more CSI reports into a single codeword using a forward error correction (FEC) code for transmission over the physical uplink control channel (PUCCH). The CSI components include the CSI reference signal (CSI-RS) resource indicator (CRI), rank indicator (RI), layer indicator (LI), precoding matrix indicator (PMI), and channel quality indicator (CQI). Before encoding, padding bits are added to the CSI payload to ensure its bitwidth matches a predetermined maximum allowable value. The CSI components are ordered in a specific sequence: CRI, RI, LI, padding bits, PMI, and CQI. This approach reduces transmission overhead by consolidating multiple CSI reports into a single encoded transmission, improving spectral efficiency and reliability in wireless communications.
17. The medium of claim 16 , wherein the number of padding bits A padding is calculated as: A padding =A max CSI where A CSI is the bitwidth of the reported components of the CSI payload and A max CSI is the maximum allowable CSI payload bitwidth.
This invention relates to wireless communication systems, specifically to techniques for padding channel state information (CSI) payloads to ensure proper transmission and decoding. The problem addressed is the need to align CSI payloads to specific bitwidth requirements while maintaining efficient data transmission. In wireless systems, CSI is used to optimize communication by providing feedback about channel conditions, but the payload must conform to predefined bitwidth constraints to ensure compatibility with transmission protocols. The invention describes a method for calculating the number of padding bits required for a CSI payload. The padding bits are determined by comparing the bitwidth of the reported CSI components (A CSI) against the maximum allowable CSI payload bitwidth (A max CSI). The padding bits (A padding) are calculated as the difference between A max CSI and A CSI, ensuring the payload meets the required bitwidth without exceeding it. This approach allows for flexible adaptation to varying CSI payload sizes while maintaining compliance with transmission standards. The technique is particularly useful in systems where CSI payloads must be aligned to fixed bitwidths, such as in orthogonal frequency-division multiplexing (OFDM) or multiple-input multiple-output (MIMO) systems. By dynamically adjusting padding, the method ensures efficient use of transmission resources while avoiding errors due to misaligned payloads. The invention may be implemented in wireless devices, base stations, or other network components responsible for CSI reporting and processing.
18. The medium of claim 16 , wherein the bitwidth of the reported components of the CSI payload A CSI is a function of the reported RI and wherein the maximum allowable CSI payload bitwidth A max CSI is a function of the number of allowed RI values.
This invention relates to wireless communication systems, specifically to techniques for optimizing the bitwidth of Channel State Information (CSI) payloads in communication protocols. The problem addressed is the efficient transmission of CSI feedback in systems where the bitwidth of reported components varies based on Rank Indication (RI) values, while ensuring the total CSI payload does not exceed a maximum allowable bitwidth. The invention describes a method where the bitwidth of reported CSI components is dynamically adjusted based on the reported RI. The RI, which indicates the number of spatial layers used in communication, influences the bitwidth of other CSI components such as Precoding Matrix Indicator (PMI) and Channel Quality Indicator (CQI). The system ensures that the total CSI payload bitwidth does not exceed a predefined maximum, which is determined by the number of allowed RI values. This approach optimizes bandwidth usage by allocating more bits to higher-RI configurations where more detailed feedback is needed, while limiting the total payload size to avoid excessive overhead. The invention also includes mechanisms to enforce the maximum allowable CSI payload bitwidth, ensuring compatibility with system constraints. By dynamically adjusting the bitwidth based on RI, the system balances feedback granularity and overhead, improving efficiency in wireless communication. This technique is particularly useful in systems like 5G and beyond, where efficient CSI feedback is critical for beamforming and link adaptation.
19. The medium of claim 16 , wherein the predetermined maximum allowable CSI payload bitwidth is determined by parameters to be received from a next generation Node B (gNB).
The invention relates to wireless communication systems, specifically to managing the payload size of Channel State Information (CSI) reports in next-generation cellular networks. The problem addressed is the need to efficiently control the bitwidth of CSI payloads to balance accuracy and overhead in high-speed wireless communications. CSI reports, which provide feedback on channel conditions, can vary in size depending on the complexity of the channel environment. If the payload is too large, it increases overhead and reduces efficiency, while an overly constrained payload may degrade performance. The invention involves a method for determining a predetermined maximum allowable CSI payload bitwidth based on parameters received from a next-generation Node B (gNB). The gNB, which is the base station in 5G and beyond networks, transmits configuration parameters to a user equipment (UE) device. These parameters define constraints on the CSI payload size, ensuring that the UE generates CSI reports that fit within the allowed bitwidth. The parameters may include factors such as the number of antennas, subcarrier spacing, or other network conditions that influence the required CSI precision. By dynamically adjusting the maximum allowable bitwidth, the system optimizes the trade-off between CSI accuracy and transmission efficiency, improving overall network performance. The invention is implemented in a non-transitory computer-readable medium storing instructions that, when executed, perform the described operations.
20. The medium of claim 16 , wherein the maximum allowable CSI payload bitwidth A max CSI is calculated as: A max CSI =max(A PMI (r)+A CQI (r)+A LI (r)) where max(A PMI (r)+A CQI (r)+A LI (r)) is the maximum of the sum of the PMI bitwidth A PMI (r), the CQI bitwidth A CQI (r), and the LI bitwidth A LI (r) over a set of rank values allowed to be reported.
In wireless communication systems, efficient feedback of channel state information (CSI) is critical for optimizing data transmission. The invention addresses the challenge of determining the maximum allowable CSI payload bitwidth to ensure reliable and efficient communication. The solution involves calculating the maximum allowable CSI payload bitwidth (A_max_CSI) by evaluating the sum of three key parameters: the PMI (Precoding Matrix Indicator) bitwidth (A_PMI), the CQI (Channel Quality Indicator) bitwidth (A_CQI), and the LI (Layer Indicator) bitwidth (A_LI). The calculation is performed over a set of allowed rank values, and the maximum sum of these bitwidths is selected as the final value for A_max_CSI. This approach ensures that the CSI payload remains within feasible transmission limits while accommodating variations in channel conditions and reporting requirements. The method supports dynamic adaptation to different rank values, enhancing flexibility and performance in wireless communication systems. The invention is particularly useful in systems where precise channel feedback is essential for maintaining high data rates and reliability.
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September 29, 2020
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